Absorption of Curcumin is the problem because it is not absorbed very well. Black pepper can help but could also cause other problems because it stops the liver from breaking things down to some degree. Black pepper extract has received some criticism for that kind of reason.
Liposomal Curcumin might be an option around that.
However it's whether you really need to absorb it if all that you want is the effect in the digestive system for treating biofilms. Maybe other options might work better.